Home / 82,739.80-124,109.70-54,746.20

Finding the Fourth Proportional to 82,739.80, 124,109.70 and 54,746.20

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Solution

The fourth proportional to 82,739.80, 124,109.70 and 54,746.20 is: 82,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,739.80 : 124,109.70 = 54,746.20 : x
  2. Step 2: Convert to fraction form
    82,739.80/124,109.70 = 54,746.20/x
  3. Step 3: Cross multiply
    82,739.80x = 124,109.70 × 54,746.20
  4. Step 4: Simplify right side
    82,739.80x = 6,794,534,458.14
  5. Step 5: Solve for x
    x = 6,794,534,458.14/82,739.80
  6. Step 6: Final answer
    x = 82,119.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.